Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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How private are Europe’s private forests? A comparative property rights analysis
Nichiforel, Liviu ; Keary, Kevin ; Deuffic, Philippe ; Weiss, Gerhard ; Thorsen, Bo Jellesmark ; Winkel, Georg ; Avdibegović, Mersudin ; Dobšinská, Zuzana ; Feliciano, Diana ; Gatto, Paola ; Gorriz Mifsud, Elena ; Hoogstra-klein, Marjanke ; Hrib, Michal ; Hujala, Teppo ; Jager, Laszlo ; Jarský, Vilém ; Jodłowski, Krzysztof ; Lawrence, Anna ; Lukmine, Diana ; Pezdevšek Malovrh, Špela ; Nedeljković, Jelena ; Nonić, Dragan ; Krajter Ostoić, Silvija ; Pukall, Klaus ; Rondeux, Jacques ; Samara, Theano ; Sarvašová, Zuzana ; Scriban, Ramona Elena ; Šilingienė, Rita ; Sinko, Milan ; Stojanovska, Makedonka ; Stojanovski, Vladimir ; Stoyanov, Nickola ; Teder, Meelis ; Vennesland, Birger ; Vilkriste, Lelde ; Wilhelmsson, Erik ; Wilkes-Allemann, Jerylee ; Bouriaud, Laura - \ 2018
Land Use Policy 76 (2018). - ISSN 0264-8377 - p. 535 - 552.
Private forests are widespread in Europe providing a range of ecosystem services of significant value to society, and there are calls for novel policies to enhance their provision and to face the challenges of environmental changes. Such policies need to acknowledge the importance of private forests, and importantly they need to be based on a deep understanding of how property rights held by private forest owners vary across Europe. We collected and analysed data on the content of property rights based on formal legal requirements existing in 31 European jurisdictions. To allow a comparison across jurisdictions, we constructed an original Property Rights Index for Forestry encompassing five rights domains (access, withdrawal, management, exclusion and alienation). We documented substantial variation of the private forest owners’ rights, and notably to i) make decisions in operational management and the formulation of management goals, ii) withdraw timber resources from their forest, and iii) exclude others from the use of forest resources. We identified broad relations between the scope for decision making of private forest owners and jurisdictions’ former socio-political background and geographical distribution. The variation in the content of property rights has implications for the implementation of international environmental policies, and stresses the need for tailored policy instruments, when addressing European society’s rural development, the bioeconomy, climate change mitigation measures and nature protection strategies.
Regioscan Zoetwatermaatregelen : beperken watervraag landbouw door kleinschalige maatregelen
Delsman, J.R. ; Reinhard, A.J. ; Winkel, T. te; Loon, A.H. van; Boekel, E.M.P.M. van; Bartholomeus, R.P. ; Massop, H.T.L. ; Mulder, H.M. ; Polman, N.B.P. ; Schasfoort, F.E. ; Jeuken, A.B.M. - \ 2018
Landschap : tijdschrift voor Landschapsecologie en Milieukunde 2018 (2018)1. - ISSN 0169-6300 - p. 66 - 73.
Omdat zoetwatertekorten steeds talrijker worden, zoeken waterbeheerders met landbouwers naar manieren om de vraag te verminderen. Onbekend is in hoeverre kleinschalige maatregelen kunnen bijdragen aan de regionale zoetwateropgave en tegen welke kosten. De Regioscan Zoetwatermaatregelen geeft ruimtelijk inzicht in de rendabiliteit van maatregelen voor agrariërs, en effecten op gebiedsniveau. Het instrument ondersteunt hiermee de dialoog tussen waterbeheerder en boer. Vooralsnog lijken baten van kleinschalige zoetwatermaatregelen alleen in specifieke gebieden op te wegen tegen de kosten.
Regioscan zoetwatermaatregelen : Verkennen van het perspectief van kleinschalige zoetwatermaatregelen voor de regionale zoetwateropgave
Delsman, Joost ; Boekel, Erwin van; Reinhard, Stijn ; Winkel, Tine te; Loon, Arnaut van; Bartholomeus, Ruud ; Mulder, Martin ; Massop, Harry ; Polman, Nico ; Schasfoort, Femke - \ 2018
Amersfoort : Stowa (Stowa rapport 2018-13) - ISBN 9789057737848 - 135
De Regioscan zoetwatermaatregelen brengt de bijdrage in beeld die lokale maatregelen kunnen leveren aan het opheffen van regionale zoetwatertekorten. Dit helpt bij de ontwikkeling van een zoetwaterstrategie. Het rapport bevat meer informatie en achtergronden over het instrument, en een handleiding voor het gebruik.
Perchloraat in kasgrond Bioteelt : Resultaat uitspoelproef voor vermindering perchloraat concentratie in de biologische kasteelt
Voogt, Wim ; Winkel, Aat van - \ 2018
Bleiswijk : Wageningen University & Research, BU Glastuinbouw (Rapport WPR 765) - 22
certain fertilisers. This ion can be taken up by plants quite easily and will be transported partly into fruits, hence the norms for ClO4 - will be exceeded easily. Experiments have been carried out to leach out the soil by flushing. It appeared that ClO4 - can be leached out quite easily, but it requires a lot of water and the strategy has to be adapted to the soil type.
β2→1-fructans modulate the immune system in vivo in a microbiota-dependent and -independent fashion
Fransen, Floris ; Sahasrabudhe, Neha M. ; Elderman, Marlies ; Bosveld, M. ; Aidy, Sahar El; Hugenholtz, F. ; Borghuis, Theo ; Kousemaker, Ben ; Winkel, Simon ; Gaast-de Jongh, Christa van der; Jonge, Marien I. de; Boekschoten, M.V. ; Smidt, H. ; Vos, Paul de - \ 2018
Mus musculus - GSE94516 - PRJNA371228
It has been shown in vitro that only specific dietary-fibers contribute to immunity but studies in vivo are not conclusive. Here we investigated degree of polymerization (DP) dependent effects of β2→1-fructans on immunity via microbiota-dependent and -independent effects. To this end, conventional or germ-free mice received short- or long-chain β2→1-fructan for 5 days. Immune cell populations in the spleen, mesenteric lymph nodes (MLN), and Peyer's patches (PPs) were analyzed with flow cytometry, genome-wide gene expression in the ileum was measured with microarray, and gut microbiota composition was analyzed with 16S rRNA sequencing of fecal samples. We found that β2→1-fructans modulated immunity by both microbiota and microbiota-independent effects. Moreover, effects were dependent on the chain-length of the β2→1-fructans type polymer. Both short- and long-chain β2→1-fructans enhanced T-helper 1 cells in Peyer's patches, whereas only short-chain β2→1-fructans increased regulatory T cells and CD11b-CD103- DCs in the MLN. A common feature after short- and long-chain β2→1-fructan treatment was enhanced Fut2 expression and other IL-22-dependent genes in the ileum of conventional mice. These effects were not associated with shifts in gut microbiota composition, or altered production of short-chain fatty acids. Both short- and long-chain β2→1-fructans also induced immune effects in germ-free animals, demonstrating direct effect independent from the gut microbiota. Also, these effects were dependent on the chain-length of the β2→1-fructans. Short-chain β2→1-fructan induced lower CD80 expression by CD11b-CD103- DCs in PPs, whereas long-chain β2→1-fructan specifically modulated B cell responses in germ-free mice. In conclusion, support of immunity is determined by the chemical structure of β2→1-fructans and is partially microbiota-independent.
The impact of a gender and business training on income hiding : An experimental study in Vietnam
Bulte, Erwin H. ; Lensink, Robert ; Winkel, Anne B. - \ 2018
Journal of Economic Behavior and Organization 148 (2018). - ISSN 0167-2681 - p. 241 - 259.
Gender and entrepreneurship training - Hiding - Information asymmetries - Non-cooperative household models
We use a randomized controlled trial and behavioral game to study the extent and determinants of income hiding in rural Vietnam. We focus on a training program that aims to promote gender equality and entrepreneurship among women in poverty who are engaged in running a small business. In one treatment arm, we allow husbands to participate in the training as well. While the impact of the training on income hiding is not significant at usual significance levels if only women are allowed to follow the training, we provide some evidence that the training invites women to hide income. Our study also suggests that allowing husbands to be present at the training intensifies this effect. We discuss several mechanisms that may explain these findings, including an increase in expected income and a decrease in information asymmetry between the spouses.
Natriumgevoeligheid en recirculatie bij Cymbidium in 3 teeltjaren : Behoud plantgezondheid en voorkomen groeiremming bij hergebruik drainwater
Kromwijk, Arca ; Voogt, Wim ; Steenhuizen, Johan ; Winkel, Aat van; Mourik, Nico van - \ 2017
Bleiswijk : Wageningen University & Research, BU Glastuinbouw (Rapport WPR 735) - 54
In the Netherlands, the government and horticultural industry have agreed to lower the emission of nutrients to the environment. Until recently no drain water was reused in the cultivation of Cymbidium orchids as growers were allowed to discharge the drain water when a sodium level of more than 0 mmol/l was reached. As reusing drain water is a new phenomenon for Cymbidium, growers were faced with a lack of knowledge on the effects of drain water reuse. Therefore a trial was started to investigate the effect of sodium accumulation on crop growth and flowering in two varieties of Cymbidium. Different sodium concentrations are given while maintaining the EC at 0.8. These sodium treatments have a lower “nutritional EC” than the control treatment without sodium. In the first year of cultivation unusual symptoms in the leaves emerged at the two highest levels of sodium resulting in dead leaf tips / leaves. This is potassium deficiency, induced by the lower potassium concentration in the nutritional solution and by inhibition of the potassium uptake by a high sodium concentration. In the first year of cultivation, sodium accumulation had no effect on production as the flower stalks were already induced before or just after the start of the treatments. In the second and third year of cultivation, sodium accumulation reduced production and quality of Cymbidium. This research is funded by the Cymbidium growers in the Netherlands, Product Board for Horticulture, Top Sector Horticulture & Propagation Materials and Foundation Program Fund Greenhouse Horticulture.
How can forest-based bioeconomy contribute to climate change adaptation and mitigation
Lindner, Marcus ; Hanewinkel, Marc ; Nabuurs, G.J. - \ 2017
In: Towards a sustainable European forest-based bioeconomy / Winkel, Georg, European Forest Institute (What Science can tell us 8) - ISBN 9789525982417 - p. 77 - 85.
The role of forests in bioeconomy strategies at the domestic and EU level
Pülzl, H. ; Giurca, Alexandru ; Kleinschmit, D. ; Arts, B.J.M. ; Mustalahti, Irmeli ; Sergent, Arnaud ; Secco, Laura ; Pettenella, Davide ; Brukas, Vilis - \ 2017
In: Towards a sustainable European forest-based bioeconomy / Winkel, G., Bonn : European Forest Institute (What Science Can Tell Us 8) - ISBN 9789525980417 - p. 36 - 53.
Aanpak van fijnstof in stallen
Winkel, A. - \ 2017
Wageningen : Kennisonline
dierenwelzijn - diergezondheid - pluimvee - dierlijke productie - animal welfare - animal health - poultry - animal production
Sinds 2008 werken alle sectoren in Nederland aan het verlagen van hun uitstoot van fijnstof. In de veehouderij wordt gebruik gemaakt van speciale technieken zoals een strooiselschuif. Wageningen University & Research heeft deze technieken ontwikkeld.
Zo worden de reductietechnieken voor fijn stof beproefd
Winkel, A. - \ 2017
Praktijkcentrum Emissiereductie Veehouderij
In de pilots van het Praktijkcentrum voor Emissiereductie in de Veehouderij werken verschillende partijen samen. In deze column vertelt Albert Winkel, onderzoeker dierhouderij en leefomgeving bij Wageningen Livestock Research hoe zij bijdragen voor het wetenschappelijke valide (zuiver) beproeven van innovaties. Daarbij maken ze gebruik van de kennis die ze sinds 2007 hebben ontwikkeld.
Livestock farms as major emission source of atmospheric particles in the Netherlands : lessons learned and future perspectives
Winkel, A. ; Ogink, N.W.M. ; Aarnink, A.J.A. ; Groot Koerkamp, P.W.G. - \ 2017
Fijnstofreductie uitvogelen
Winkel, Albert - \ 2017

Gelderland wil samen met de gemeenten uit de regio Food Valley, met Wageningen in het centrum van deze regio, de fijnstof­uitstoot in de pluimveesector beperken. De provincie startte daarom begin november een pilot om nieuwe fijnstofreductiesystemen te testen.

Gelderland wil samen met de gemeenten uit de regio Food Valley, met Wageningen in het centrum van deze regio, de fijnstof­uitstoot in de pluimveesector beperken. De provincie startte daarom begin november een pilot om nieuwe fijnstofreductiesystemen te testen

Endotoxinen rond stallen. Is een aanvullend toetsingskader nodig?
Erbrink, J.J. ; Heederik, D.J.J. ; Ogink, N.W.M. ; Winkel, A. ; Wouters, I.M. - \ 2017
Tijdschrift Lucht 13 (2017)3. - ISSN 1871-4773 - p. 15 - 18.
In dit artikel beschrijven we een eerste aanzet gegeven tot een kwantitatief microbieel verspreidingsmodel.
Dit moet een onderdeel gaan vormen van een modelketen die leidt tot een risicobeoordelingsmodel
voor de volksgezondheidseffecten van endotoxinen uit de landbouw.
Evaluation of manure drying tunnels to serve as dust filters in the exhaust of laying hen houses: Emissions of particulate matter, ammonia, and odour
Winkel, Albert ; Mosquera, Julio ; Aarnink, André J.A. ; Groot Koerkamp, Peter W.G. ; Ogink, Nico W.M. - \ 2017
Biosystems Engineering 162 (2017). - ISSN 1537-5110 - p. 81 - 98.
Ammonia - Emission - Manure drying tunnel - Odour - Particulate matter - Poultry
IAgrE Poultry houses are important emission sources of ammonia, odour, and particulate matter (PM). Manure drying tunnels (MDTs) might act as ‘end of pipe’ PM filters, but might also emit additional ammonia and odour. This study aimed to gain insight into this matter (parts A and B) and into the perspective of two strategies to reduce additional emissions: (1) by pre-drying the manure on the belts inside the house (part C), and (2) by reducing manure accumulation time (MAT) in the house to 24-h followed by rapid drying inside the MDT (part D). This study was set up as an emission survey at 16 laying hen farms with a MDT. Results from parts A through C showed that PM 10 removal efficiency of the MDTs increases linearly with manure layer thickness: from about 35% at 4 cm to 84% at 17 cm. Ammonia and odour concentrations in the drying air increased substantially upon passing the manure layers, from on average 5.5 to 13.9 ppm ammonia and from 822 to 1178 OU E m −3 . In part C, ammonia emission decreased with increasing DM content of the manure, but even at DM content levels beyond 50%, substantial ammonia emission remained. In part D, the emission rates of houses and MDTs together were 44% lower for PM 10 , 20% higher for ammonia, and 40% higher for odour compared with the theoretical situation of the houses without MDT. Further shortening MAT to 18, 12, or 6 h might be needed to reduce emissions from MDTs.
The challenge of financing the implementation of Natura 2000 – Empirical evidence from six European Union Member States
Geitzenauer, Maria ; Blondet, Marieke ; Koning, Jessica De; Ferranti, Francesca ; Sotirov, Metodi ; Weiss, Gerhard ; Winkel, Georg - \ 2017
Forest Policy and Economics 82 (2017). - ISSN 1389-9341 - p. 3 - 13.
Natura 2000, which is the core pillar of the European Union's biodiversity conservation policy, is an ambitious and complex venture that requires funding to be successful. A major challenge is said to be a lack of available funding, and a low uptake of allocated funds is also reported. However, in in-depth analysis has still not been produced to assess the approaches to funding, the reasons for these approaches and their impact regarding the achievement of the aims of Natura 2000. Thus, with this article, we intend to fill this gap. To accomplish this, a case study analysis was carried out in six selected EU Member States: Austria, France, Germany, the Netherlands, Spain, and the UK.

In our study, we perceived different approaches which we sum up to two main types of approaches that were present in the Member States to different degrees. The first type was to find the funding necessary for the required activities, and the second was to delay the implementation of Natura 2000. The major reasons for the different approaches were related to domestic political power realities. The funding approaches impacted onto the attractiveness of EU co-financing instruments, and the sustainability of the schemes. Alternative approaches were either absent or declining in importance. The economic benefits were not perceived on the ground.

We conclude that neither a “one size fits all” approach to funding Natura 2000 will work nor will a universal claim for “more money”. Therefore, a successful funding strategy ultimately necessitates effective interventions at institutional levels, the business environment and the local level.
Participation in the implementation of Natura 2000: A comparative study of six EU member states
Blondet, Marieke ; Koning, J. de; Borrass, L. ; Ferranti, Francesca ; Geitzenauer, M. ; Weiss, G. ; Turnhout, E. ; Winkel, G. - \ 2017
Land Use Policy 66 (2017). - ISSN 0264-8377 - p. 346 - 355.
The establishment of Natura 2000, the European Union’s network of protected areas, has been a challenging process and has caused a variety of conflicts. These conflicts are related to contradictory stakeholder interests and perceptions, as well as to procedural issues and feelings of exclusion, especially by concerned local land user groups. To prevent further conflict, local participation has been stressed as an important tool to increase the inclusiveness of Natura 2000 and its acceptance among land users. In this paper, we present an analysis of participation practices related to the Natura 2000 implementation processes in six EU member states. Based on material collected from semi-structured interviews and document analysis, we describe the organisational settings of the participatory processes, focusing, among other things, on the type of participants involved, the level and intensity of their involvement, and the goal of participation. In addition, we also describe the local context in which the participation processes have been embedded. Finally, we assess the outcomes of the participatory processes in terms of their impact on forest and nature conservation management practices. Our results show that local participation practices were shaped not just by the Natura 2000 policy, but also by the history of the area, including, for example, earlier conflicts among the local actors. We also show that although the participation process leads to a greater acceptance of the Natura 2000 policy, this does not relate to significant changes in management practices among local actors. These findings, however, do not suggest that participation is irrelevant. Rather, we conclude that participation involves context-dependent, localised learning processes that can only be understood by taking the historical socio-economic and institutional context in which they are situated into account.
Household food waste
Wahlen, S. ; Winkel, Thomas - \ 2017
In: Reference Module in Food Science / Smithers, Geoffrey W., Elsevier - ISBN 9780081005965 - 5 p.
household - food waste - consumer
Food waste is debated not only in the light of sustainable consumption in research and policy, but also in the broader public. This article focuses on food waste in household contexts, what is widely believed the end of the food chain. However, household food waste is far more complex and intricate than one might believe. We outline distinct features of food waste on the level of the individual consumer and along processes in the household, from food provision to storing and preparing meals and finally eating and disposing of food. Alongside, important features of household food waste relate to more structural aspects in frameworks and regulations of consumer policy. This more structural perspective is also reflected in broader food cultures in terms of norms and moralities, as well as in associated discourses.
β2→1-fructans modulate the immune system in vivo in a microbiota-dependent and -independent fashion
Fransen, Floris ; Sahasrabudhe, Neha M. ; Elderman, Marlies ; Bosveld, Margaret ; Aidy, Sahar El; Hugenholtz, Floor ; Borghuis, Theo ; Kousemaker, Ben ; Winkel, Simon ; Gaast-de Jongh, Christa van der; Jonge, Marien I. de; Boekschoten, Mark V. ; Smidt, Hauke ; Schols, Henk A. ; Vos, Paul de - \ 2017
Frontiers in Immunology 8 (2017). - ISSN 1664-3224
Germ-free mice - Gut microbiota - Mucosal immunology - Prebiotics - β2→1-fructans
It has been shown in vitro that only specific dietary fibers contribute to immunity, but studies in vivo are not conclusive. Here, we investigated degree of polymerization (DP) dependent effects of β2→1-fructans on immunity via microbiota-dependent and -independent effects. To this end, conventional or germ-free mice received short- or long-chain β2→1-fructan for 5 days. Immune cell populations in the spleen, mesenteric lymph nodes (MLNs), and Peyer's patches (PPs) were analyzed with flow cytometry, genome-wide gene expression in the ileum was measured with microarray, and gut microbiota composition was analyzed with 16S rRNA sequencing of fecal samples. We found that β2→1-fructans modulated immunity by both microbiota and microbiota-independent effects. Moreover, effects were dependent on the chain-length of the β2→1-fructans type polymer. Both short- and long-chain β2→1-fructans enhanced T-helper 1 cells in PPs, whereas only short-chain β2→1-fructans increased regulatory T cells and CD11b-CD103- dendritic cells (DCs) in the MLN. A common feature after short- and long-chain β2→1-fructan treatment was enhanced 2-alpha-l-fucosyltransferase 2 expression and other IL-22-dependent genes in the ileum of conventional mice. These effects were not associated with shifts in gut microbiota composition, or altered production of short-chain fatty acids. Both short- and long-chain β2→1-fructans also induced immune effects in germ-free animals, demonstrating direct effect independent from the gut microbiota. Also, these effects were dependent on the chain-length of the β2→1-fructans. Short-chain β2→1-fructan induced lower CD80 expression by CD11b-CD103- DCs in PPs, whereas long-chain β2→1-fructan specifically modulated B cell responses in germ-free mice. In conclusion, support of immunity is determined by the chemical structure of β2→1-fructans and is partially microbiota independent.
Abatement of particulate matter emission from experimental aviary housings for laying hens by spraying rapeseed oil
Winkel, A. ; Riel, J.W. van; Emous, R.A. van; Aarnink, A.J.A. ; Groot Koerkamp, P.W.G. ; Ogink, N.W.M. - \ 2016
Poultry Science 95 (2016)12. - ISSN 0032-5791 - p. 2836 - 2848.
In alternative systems for laying hens, concentrations and emission rates of particulate matter (PM) give reason for concern with regard to working conditions, bird health and productivity, and health of residents living near farms. Previously, we found that spraying a film of rapeseed oil onto the litter of broilers could substantially reduce PM concentrations and emissions. The objective of this study was to establish dose-response effects of oil spraying in aviaries on concentrations and emission rates of PM with aerodynamic diameters less than 10 μm (PM10) and 2.5 μm (PM2.5), on stockmen's exposure to PM10, on egg production, exterior quality and behavior of the hens, and on the litter. An experiment was carried out with 4 treatments: 0 (control), 15, 30, and 45 mL/m2 per d (oil treatments). Each treatment was applied in 2 rooms with different aviary systems (8 rooms in total). The experiment was repeated during a second period, both lasting 35 days. From d 11 to d 35, oil was applied daily using a spraying gun. Applying 15, 30, or 45 mL/m2 per d significantly reduced emission rates of PM10 by 27, 62, and 82%, and emission rates of PM2.5 by 71, 83, and 94%, respectively. No significant effects of oil spraying were found on mortality, egg production, dust bathing behavior, scratching behavior, plumage soiling, DM content of the litter, or friability of the litter. A significant worsening of the plumage condition was found only for the body spot back/wings/tail (not for: throat/neck, chest/breast, or legs) in the 45 mL/m2 per d treatment. Egg quality shifted significantly towards more second-class eggs in the oil treatments (1.9% versus 1.4%; P = 0.004). Remarkably, foot soiling decreased with increasing oil application. In conclusion, PM concentrations and emission rates in aviaries can be effectively reduced by spraying 15 to 30 mL/m2 per d with minor side effects within a 25 d application period.
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